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Pre-Algebra Ch. 7

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
Elena has $240 in the bank. She withdraws $15 each wekk to pay for piano lessons. How many lessons can she afford with her savings?   16  
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Wendy bought a drill at a 10% off sale. The sale price was $75.60. Find the original price p.   $84  
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Lamar's summer job is mowing lawns for a landscaper. His pay is $7.50/h. Lamar also makes $11.25/h for any time over 40 h that he works in one week. He worked 40 h last week plus n overtime hours and made $339.38. How many overtime hours did he work?   3.5  
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Find two whole numbers with a sum of 15 and a product of 54   9, 6  
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A farmer is building a square pen 21 ft on each side. He puts one post at each corner and one post every 3 ft. in between. How many posts will he use?   28  
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Cathy has a collection of dimes and quarters. The number of dimes equals the number of quarters. She has a total of $2.80. How many of each coin does Cathy have?   8  
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